I have the following test code, where I am trying to chain together different coroutines.
The idea is that I want to have one coroutine that downloads data, and as soon as data is downloaded I want to get the data into the second routine which then process the data.
The code below works, whenever I skip the process_data step, but whenever I include the process_data step (trying to chain together coroutines) it fails. How can I fix it?

import asyncio
import time

task_inputs = [0,1,2,3,4,5,4,3,4]

async def download_dummy(url):
    await asyncio.sleep(url)
    data = url
    print(f'downloaded {url}')
    return data

async def process_data(data):
    await asyncio.sleep(1)
    processed_data = data*2
    print(f"processed {data}")
    return processed_data

async def main(task_inputs):
    task_handlers  = []
    print(f"started at {time.strftime('%X')}")
    async with asyncio.TaskGroup() as tg:
        for task in task_inputs:
            res = tg.create_task(process_data(download_dummy(task)))
            # res = tg.create_task(download_dummy(task))
            task_handlers.append(res)

    print(f"finished at {time.strftime('%X')}")
    results = [task_handler.result() for task_handler in task_handlers]
    print(results)

asyncio.run(main(task_inputs))

The error I get is rather telling, it seems that the first coroutine is not actually executed, when it is passed to the second coroutine, but I am not sure how I can elegantly fix this.

+ Exception Group Traceback (most recent call last):
  |   File "C:Program FilesJetBrainsPyCharm Community Edition 2024.1.4pluginspython-cehelperspydevpydevd.py", line 2252, in <module>
  |     main()
  |   File "C:Program FilesJetBrainsPyCharm Community Edition 2024.1.4pluginspython-cehelperspydevpydevd.py", line 2234, in main
  |     globals = debugger.run(setup['file'], None, None, is_module)
  |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |   File "C:Program FilesJetBrainsPyCharm Community Edition 2024.1.4pluginspython-cehelperspydevpydevd.py", line 1544, in run
  |     return self._exec(is_module, entry_point_fn, module_name, file, globals, locals)
  |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |   File "C:Program FilesJetBrainsPyCharm Community Edition 2024.1.4pluginspython-cehelperspydevpydevd.py", line 1551, in _exec
  |     pydev_imports.execfile(file, globals, locals)  # execute the script
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |   File "C:Program FilesJetBrainsPyCharm Community Edition 2024.1.4pluginspython-cehelperspydev_pydev_imps_pydev_execfile.py", line 18, in execfile
  |     exec(compile(contents+"n", file, 'exec'), glob, loc)
  |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 31, in <module>
  |     asyncio.run(main(task_inputs))
  |   File "C:UsersTue J BoesenAppDataLocalProgramsPythonPython312-arm64Libasynciorunners.py", line 194, in run
  |     return runner.run(main)
  |            ^^^^^^^^^^^^^^^^
  |   File "C:UsersTue J BoesenAppDataLocalProgramsPythonPython312-arm64Libasynciorunners.py", line 118, in run
  |     return self._loop.run_until_complete(task)
  |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |   File "C:UsersTue J BoesenAppDataLocalProgramsPythonPython312-arm64Libasynciobase_events.py", line 687, in run_until_complete
  |     return future.result()
  |            ^^^^^^^^^^^^^^^
  |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 21, in main
  |     async with asyncio.TaskGroup() as tg:
  |   File "C:UsersTue J BoesenAppDataLocalProgramsPythonPython312-arm64Libasynciotaskgroups.py", line 145, in __aexit__
  |     raise me from None
  | ExceptionGroup: unhandled errors in a TaskGroup (9 sub-exceptions)
  +-+---------------- 1 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 2 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 3 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 4 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 5 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 6 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 7 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 8 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +---------------- 9 ----------------
    | Traceback (most recent call last):
    |   File "C:UsersTue J BoesenDownloadpythonProjecttest.py", line 14, in process_data
    |     processed_data = data*2
    |                      ~~~~^~
    | TypeError: unsupported operand type(s) for *: 'coroutine' and 'int'
    +------------------------------------